Valve lift



' and Patented Mar. 4, 1924.

UNITED ATENl VALVE LIFT.

Application filed May 15, 1922. Serial No. 561,211.

To all whom it may concern:

Be it known that I, CHARLES W. MERRI- MAN, a citizen of the United States of America, and resident of Beaver Falls, in the county of Beaver and State of Pennsylvania, have invented certain new and useful Improvements in Valve Lifts, of which the following is a specification.

This invention relates to tools intended for use in manipulating rock arms and the compression springs associated with them in explosive motor constructions, and the said invention has relation more particularly to novel means whereby rock arms that are under pressure of springs may be manipulated to compress the springs and free the cam rods that coact with the rock arms.

It is an object of this invention to produce a tool which can be manufactured almost wholly by the stamping and bending processes, in order that they may be produced comparatively inexpensively and by unskilled labor.

It is a further object of this invention to produce a tool of the character indicated,

adapted to coact with a rock arm to compress the spring and lift the end of the rock arm clear of the aforesaid rod, and which will require comparatively little force to effect the results and purposes indicated.

With the foregoing and other objects in view, the invention consists in the details of construction, and in the arrangement and combination of parts to be hereinafter more fully set forth and claimed.

In describing the invention in detail, reference will be had to the accompanying drawings forming part of this application wherein like characters denote corresponding parts in the several views, and in which- Figure 1 illustrates a view in elevation of a fragment of a motor showing a device embodying the invention applied thereto;

Figure 2 illustrates a front view thereof;

Figure 3 illustrates a perspective view of the tool.

As the motor and the parts thereof are conventionally shown only for the purpose of disclosing the applicability of the tool thereto and are of well known construction,

a detail description'of the parts thereof is believed unnecessary for an understanding of the invention by one skilled'in the art.

The tool forming the subject'of this invention comprises a handle 5 which may be of any appropriate length and preferably provided with an enlarged end 6 to prevent the disassociation of the hook 7 from the handle, it being shown that the said hook has an eye 8 to receive the handle, The book is slidable on the handle in order that it may be located or stationed at dilferent positions with relation to the bifurcated inner end 9 of the said handle. The adjustment afforded permits the hook to engage a rock arm at different positions and renders it effective for operation in connection with rock arms of different lengths, as will be understood.

FlCE I p The bifurcated end 9 has its fur cations 10 r and 11 terminating preferably in flat surfaces in order that they will more firmly set on the washers which are usually employed as seats for the angularly disposed ends, of rock arms, and the said furcations are spaced apart to such a degree as to permit them to straddle the rock arm and engage the washer on each side of the end of the rock arm. The furcations should be of such length as to make the tool adaptable to rockarms of different sizes, as the angularly disposed ends of these rock arms differ in length to a greater or less extent in the motors of different makes or types.

In operation, the tool is employed substantially in the manner shown in Figures 1 and 2, wherein the hook is caused to embrace the under edge of a rock arm on one side of its fulcrum, whereas the bifurcated end is caused to bear against the washer of the spring. When the parts are in the posi tions stated and shown, the outer end of the .tool is lifted to compress the spring and lift the end of the rock arm remote from the spring and for the purposes aforesaid.

By reason of the construction, the tool can be applied to and removed from the motor parts expeditiously, and as the'device has proven efiicient and satisfactory in use, it is believed that its merits will be recognized from the foregoing disclosure.

I claim:

A tool for manipulating rock arms of valve mechanisms comprising a handle, a hook having an eye slidable on the handle 5 by which the hook is adjustable longitudinally of the handle, the said handle having an extension at approximately right angles to the handle, the said extension being-bifurcated and terminating in. straight ends adapted to lie on a Washer of a valve spring, the furcations of the extension being spaced apart to form a clearance and permitting the furcations to straddle a rock arm and of a length to project from the upper edge of a rock arm to the end of the rock arm Where it engages said Washer, whereby the extensions bear against the Washer.

CHARLES W. MERRIMAN. 

